What do the details about the place where the letter comes from suggest about Uncle Howard?

The letter comes from a small village in Nebraska and is written to Clark, the narrator of the story, by his uncle Howard. When Clark receives the letter from Uncle Howard, he is reminded of the time he spent living with his uncle’s family in Nebraska. Clark remembers “riding herd for his uncle,” husking corn, and sitting in his aunt Georgina’s parlor playing her organ. He remembers how his aunt helped to bring him up the best way she possibly could, with limited resources. She would stay in her kitchen late in the night ironing her household’s clothes while listening to him read out loud “Latin declensions and conjugations” or Shakespeare. She was not only his guardian but his teacher too, for she taught him “scales and exercises” on her little organ, which was given her by her husband fifteen years into their marriage. The reader garners that Uncle Howard cannot afford the simple luxuries of life, such as an organ or even a house help, to help out Aunt Georgina in the house—she does all the house chores alone.
Clark also mentions Aunt Georgina’s attire upon her arrival in Boston. She is dressed in a “soiled linen duster” that covers “a black stuff dress”, the kind of which is made by village dressmakers. Her skin is hard and yellowed from frequent exposure to the harsh Nebraskan wind and the “alkaline water.” This suggests that Uncle Howard and his wife live as poor farmers would, without the niceties of life. His aunt does not care much about her physical looks nor is she concerned with fashion.